Rockwell Automation 440L GuardShield Type 2 Safety Light Curtain User Manual - Manual (Page 11)

R
GuardShield™ Type 2 Safety Light Curtain Installation Instructions
9
Original instructions
Figure 5: Determining machine stopping time and safety distance
Multiple GuardShield Type 2
When two or more GuardShield Type 2 are mounted in close proximity
to one another, it may be possible for the receiver of one GuardShield
Type 2 pair to receive infrared light from the transmitter of another
GuardShield Type 2 pair. If two or more pair of GuardShield Type 2 are
mounted in the same plane, the transmitter and receiver pairs must be
mounted in accordance with Figure 6 or a barrier is used to guard against
optical interference.
Figure 6: Multiple GuardShield Type 2 alignment options
Mounting Brackets
The GuardShield Type 2 is mounted using right angle brackets attached
to the endcaps of both transmitter and receiver. It may be necessary to use
additional brackets to mount the GuardShield Type 2 at a proper safety
distance from the machinery hazard.
Figure 7: Mounting brackets
Optional Middle Mounting Bracket (440L-AF6108)
Figure 8:
Note: Middle mounting brackets should be used in vibration
applications for protective heights of 1120 mm and larger.
Middle of Depth of Protective Field
Safety Distance
Point of Operation
Top of tool
Bottom of tool
To avoid the possibility of
standing between the protective
field and the point of operation,
the distance must be maintained.
Protective Field Marking
Machine stop time
Transmitters emit in opposite
direction. Each receiver receives only
the beams of the appropriate
transmitter.
Positioning of the light curtain:
Transmitters emit in opposite
direction.
42
(1.65)
20
(0.79)
40 (1.57)
18.9
14.5
52 (2.04)
3.0
32
(1.25)
6.5 (0.26)
49.2 (1.93)
40.2
62
24
30 (1.18)
20 (0.78)